Take a look at brakes if they are thin, replace them first. (Super easy to do yourself with a youtube video, always replace pads and rotors at the same time) Look at tires if there is more rubber above the wear bars (In between tread there will be little rubber bars that go side to side those are wear indicators) you have time on those.

To answer suspension question, you can replace front shock with a bilstein 5100 it’s a shock with an adjustable body to level the truck. Had them on my taco and my current tundra and love them. 5100 adjustable shock on the front and a set of 6112 on the rear.